{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x98e4cb4f5db362a069424c6789a2c048da9a8f7e5a108ebb517de5b311fe89a5",
    "signature": "0x56b6363cb30675770b1892dbb575ae0637f3f0561cd8d13723901b148cb592ee08e549d470fc9386aa6924bdacb7ede8c3eaee1f681c0190bbd8d56f779433d41c",
    "signer": "0x01313939c9DAC9b7Cf4f8876b3BDe6507A6E3Af5",
    "userId": "358749967"
  }
}