{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "60903",
    "entityType": "User",
    "nonce": "0x2edfd9f0a0dcc8aae5b92ee1bf881d83393e4ef0fd1f7bc47bd1b51574f73558",
    "signature": "0x8f8f91a9ff2f9bf2d4909cdd8ee375ec33adea29bda4451e689adc3b0b8cf2e97cf1ded80ed63591fe98ea52696e1a4a380de9f8296710159db41bbcd19084d91c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}