{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x4dc254220f42e123fbacd758ebba18ac5816ea155aeb91dad5a93037b47408e8",
    "signature": "0x867733308caa1e0fdab65e4890cf25789dedc80594756b2cb112ad530c04fb991d39f4449fffc4834dc06a668cb9859bf08d5781f849abfdcad81c7eaddeb68a1b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}