{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10fc432a2b3a022972f1fddb112d674496ee69f358466f97e264082ebfd60b0c",
    "signature": "0x448bf7889c437a9f0f356c5918ee4914c8d7fde3e25712aad83f718bee9f455e2da3a00102b18e4395284e6cd8b54c0bfdd5a86ebe0e1727ed437cca15432c641b",
    "signer": "0x53D8436968E5f42162145325A0de86ADc9B3cC3a",
    "userId": "689765944"
  }
}