{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x1cedcf6c6f92044502367cf46d5aae8dc3d639246e768287071b9d1a065e64cc",
    "signature": "0x7b4dcb96148f2a45a769f04c7a28458ec100c3021f69c3bfd89c5c6c80d038e572981dc08b068d260f30d532a1b0bcd4651a71380319ffeb4e1b14a06ca317531c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}