{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212492",
    "entityType": "User",
    "nonce": "0x77886d87aa2f7df0d5d404b27541e7fdb572deec8b575daa19a2b4278b6580d0",
    "signature": "0x0364c19db2db8b6cf71c4bd3fefab5277eb6b9cb0bfe77dcce938d5c0f5738a416c5bde3339e590436969cff840361f13b2a3b60c0a4b8f9d7a2acf03be2c70e1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}