{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x7cc1f59a887ea80976f8d792ee24e0cd46665b872807da2c5c5456fe69d01509",
    "signature": "0x8f904251d875ececfa9c69c9b66c137d5401fac48796f4c87c4cb9484b36918d5abbae95a02e321f7bc04186ab8ce44541239e2bc0dd4521aa657cde3fadc9401c",
    "signer": "0x4C0e8973cC8C5BB66d6627C8D489e336f0825A94",
    "userId": "939865626"
  }
}