{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "437105992",
    "entityType": "User",
    "nonce": "0xb7a8d9e15f644eadc7cd42445447adbc81d449e1b0115b4f06687abe592b5709",
    "signature": "0x2ced2953770ec82d6b501eef433a59b3fe7cdf625f5024aca7fb4f19b567343861d05bc9346f63c5b9c07a2555553f53b75b09a7e071d8a9c58cf4f5b0cc140f1c",
    "signer": "0xD8DBc17870A41e0F7ad65EecA55209e033451672",
    "userId": "800360768"
  }
}