{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf5b2b5612a3a2484311b722c745af6eca03c435fd66be79fe6acd3c110ea1f72",
    "signature": "0x01770e4c21b4b734e620ee6aed98f07f31bb5d380cd11ff88637779ee81377064dcce58c1f4ba7421d7276a5ece279c4c7830a5fa9f15e00240548fa94a869a11c",
    "signer": "0x1FC38Df5E1B70B357748B620dB6a331B1Acc6f42",
    "userId": "548894380"
  }
}