{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298140",
    "entityType": "User",
    "nonce": "0x9bc95e0416ba765a9861017b747b6d7e70dd3b68b93177e64aa74dafad3205c6",
    "signature": "0x63c9ab9ec703bddb7cc99c35acb592a203255c0b62140f22d2e421b4d1e605f926c440b45e963a20a60470f67902a846439059c3842994f2e385adefe074ab551c",
    "signer": "0x8e843e061C77d2F2C655e7a2c77c231b0A89eBA1",
    "userId": "10318501"
  }
}