{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "107347200",
    "entityType": "User",
    "nonce": "0x1d7dcbee675e8fc90bbf9c62fef6132e6f1bb617559259bf89308e8ecb4e3679",
    "signature": "0x3f8e12bb3cde53fc4c08f454bf91c2dbeb9cf55c4cf0023e1495f0d4d63e234173ae28a9387f985ba657d66c6c0a522024764e2000484836549df535181137681c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}