{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5f997ae0e4d9c24e6446000cc7a152dde3567f2e31f0281f4415c136e0b951e",
    "signature": "0xc11e9f9a72f726d6c9e1604c11bb64a6870b56096205a95c4f3da4ce6a90ac9e3d65c521e81741d1ac8e03e6d8b0752655a18e578b80405854885f4396b7d7881c",
    "signer": "0x6F70A783fF23fE56ea47FC56eA2C0C0BDc4651A4",
    "userId": "868622360"
  }
}