{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x3c145f705dd4caa7d5fba4bbd91d0b2070e5e193f6508e5ac7d05b9549162ba2",
    "signature": "0xa994f52d33a047941be8e1a4c4a3c1e00fa378d434e15ea8db900469fed7296f4ce7a2c759399ee9a736c547cc54524492078712167f567e30e85bec45d5d6a31c",
    "signer": "0xca7ED35Ea6226B62ef9998B36bcD0519E7822ab5",
    "userId": "413318698"
  }
}