{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda55a4ad52d9ed36ce79c8772bf7ded4b91ba01bde37194248bdb6e57384270a",
    "signature": "0xc631f75495d447bcd03da0ebbb81d0d5fe865b59f92e53c8899c5d24c1a52636132963af09133da3f201e5f14956644ce3c5084e71d5bd602478d43a9a5ee2681c",
    "signer": "0xD833B2E8d7076c9f0B42ca05D6f2Ea64B448601c",
    "userId": "543352483"
  }
}