{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1883015",
    "entityType": "User",
    "nonce": "0x4ce35e7249e5a892b593f2b7ae0019bf91f77cc72900df3b4659bc19c32df72d",
    "signature": "0xfd33f9aeb3f0e0bab7fdcc0ccd2bbbcc1b1a7f5fbf80a47aa8915ac5565d4b652ea465a660681316ef8f8b0c4e98e1077a267943a80f554abc2bfcce395b3dd31b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}