{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987199883",
    "entityType": "User",
    "nonce": "0x297a5531dd5571ffd56a7987a8bc7e3879fc566887c5cc2a201e15ef1223c2e1",
    "signature": "0x1e3404695127420dd46ed202c89bdf05f7507a29e4131917ea1b487efc9324f00203b89adbf0194beee1d4a50538d9aa083c731cedd3b03810ad526b04c19b321b",
    "signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
    "userId": "477934274"
  }
}