{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305916",
    "entityType": "User",
    "nonce": "0x681d3a695c6ee119b85038541da9f972f1435c96a218d5d52ba8e28ba6f69c5c",
    "signature": "0x5559f21022c3bc8de17bf554868d8eb65e15340e9133978e2c11235433277f0346d05b0d2032e8c01e3b0a01496ba4018e8c8e211374e18d651a14b420b56e7d1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}