{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81899771",
    "entityType": "User",
    "nonce": "0x652c47f2c8d1acc023a104a4e8bb0551fddf0bca5e7eb580e10d8a4e59370619",
    "signature": "0xb556a0605779d734a23917b96b13a2175e637f38e79d8d1df540929a4732d51131ff8a3928d189af00f72e83b9d32f5f73fa1ff2371edfa795f1e2c8d2c523fc1b",
    "signer": "0x76433fcfc10E04743aB4EB98660d4B47526AD243",
    "userId": "328228955"
  }
}