{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870591918",
    "entityType": "User",
    "nonce": "0x741a4f28cab000f2625314b4f17e0f6d0923549a87b9e2e04219c6b545a93d75",
    "signature": "0x3ab1d49dd36d5be54db98707671a52def12f49fda8e933af6251a336e0aa34c3579bafba67204a72f48d21a726964ec2cdef3425dc87d334dc2995a8308593571b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}