{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0x00565a3aad025fd1ffe90f97c3b2f85ab413b3f610b38f65a94ae6f4262fa343",
    "signature": "0xa4d0416de01215e5f4f4e1a57c60e406d5c322ac672b763fa00b4d6c0b19289646cee06b0b6741d7976cd2a715df36365f84c40f3fdeed4171d74cce48246c771b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}