{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xf31534087196a236ca41c6990b80c43b193d341a3f996c10e62c72887401aabf",
    "signature": "0x23d193edb8179ccb0c45e25cf1577fabbfd57398d7e53d68d5861929b49141a1030aab6aab88e0c88890283ac173e8ea580b521647a657c0025460cfb379ad801c",
    "signer": "0xa9C1a2BDeD896d3f122E366aB647BF1C74C00eBA",
    "userId": "209707164"
  }
}