{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73678",
    "entityType": "User",
    "nonce": "0xf1b47b20602c03d18ccba24725d5ad64f6b49a23e625a67597e0c4453c9a7c74",
    "signature": "0x076d551ec0ec7e4d85da62541e6eba3e847c5970e2f7eb0a18374975a9fb25916ec9f6878feb808aec8b2fcba976954abd9a4032f859f11510c2bcc465526d921c",
    "signer": "0xa16E21B675BCaB501e407E716d506F7a99896406",
    "userId": "613617474"
  }
}