{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd3cae79775433099f54bde3216230fd9168cc92065f702760524c68279506f5f",
    "signature": "0x86709c101c08a00ff704a150d629857b74d53bd9b54635dc11a3bc2e125d483147474700bcd9d2a05869b59c230dc6022db33d9e38d0d7dca11dae38efd897cd1b",
    "signer": "0xB3c90Fa241D0e199bCC4Fc878b2b8D8E2e935a4A",
    "userId": "573431032"
  }
}