{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0b4b946eb77010c4b1569a0ebbba87307b57464b99809fef9b0fa9137ce73e13",
    "signature": "0xec54a1db9b9918fce98f04dc7d9f0c4586c538223db92717a93d29b68642d5be17a997ac98e28fc9715000c36819071df60a8ad34069f1c5ff40960edf0a46991c",
    "signer": "0xbd1A6821fa1f5BB75015362Ccf54823531C8aa46",
    "userId": "877867675"
  }
}