{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "851552461",
    "entityType": "User",
    "nonce": "0x81f7ee10aaac13ba784ba7abf0a96742fbcbb8573e7a11aae3a306d057a9a719",
    "signature": "0x31b227a08851357bac58f64f770b62ae441a1bf25523f7fb8c7d648f98f64b763711d063743759e773dc3554861325324e9752d552a7a2b1e7584e705b982adf1c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}