{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "440680049",
    "entityType": "User",
    "nonce": "0x90d25c84c5d5e6215908af8045139adeef997e49fd20c9245199ca04831889b0",
    "signature": "0x47bbe0df19f0521cd9342998db396dfddf00f0846c8757fe308f32e0b076af4478de32dc1c2f6e42e3bd9ec32b8184ae1d55e91abdb1b70c96c04fa680dc46621b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}