{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139087",
    "entityType": "User",
    "nonce": "0xd3792e814eda34de6b772eaa45b65e8a9c54fcc142230f80b2018bb519f8a117",
    "signature": "0x55678a1a7afaf4446f50365f48a16d8b14ba5c0ab4c91fed3edeef86acd084e672869b049de97e939a989ebcf94b242be4567cddbf715193980f1e8b1470f0e01b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}