{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5083bedc776cc6b096acf82f165222f8b1941b6b920e6f8611575fb9e835fe80",
    "signature": "0x2405644cf0b3e1ad6c90b8a9fe8dc969ceaf5558b912cfbc82b5d6c0cd0988b637960055ffe713c529cacc727f9cc06cda8d46f70b409f58510c395b27e6c1eb1c",
    "signer": "0xaab2463FC6fF94e19f24948c11C06A1C240639F3",
    "userId": "293364146"
  }
}