{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf148c2bf263aa58d86ecc6ba1640cce9984de956581330349894d4bfac0c209c",
    "signature": "0x37f815bb5af17ad953160b2de195dc6807e0c9c6567b37fb317ddd8c9a3431e70f0ed4db2f1f92acb1e93345fa67d78444ac5a0370f0ebb8ea9da11db14d8a8c1b",
    "signer": "0xA12726cA2C11890143459beBC587Bcc551d6f387",
    "userId": "735486174"
  }
}