{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "276441",
    "entityType": "User",
    "nonce": "0x5c3a18f556431534d512b509f94486c2b1031a2d216c3d15e768b8b0ed44f320",
    "signature": "0x73c576d8872767b297076d2c1fad33f07e850a913315bd22264400f5982d7bce233a662dcb821f524051149b0e0586f702580baefef6641be47eb65fda59641a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}