{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7bbc87fb4b598b46d7e7f01b9ccce6dfb187563e5b5814b2f9c0351c51d51d49",
    "signature": "0xa468986951f6386b6e59023ac914c1d0b6b7386474000c1252935a5efe32266c698398f74daf5f92a54fe65eff4393edf11a97b443c59a61dc367bbda40529621b",
    "signer": "0x7a991F28f8c946030bE26Eb8408414771247985d",
    "userId": "514559071"
  }
}