{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "419238",
    "entityType": "User",
    "nonce": "0x409d35ce0076e373c738bc9de9420b55a1748159da8914528bdbeca0efbe6622",
    "signature": "0xc5ce70b3416e0c1b924e8afe64bdee37a16e610eca4f4093bd5eb11fb01952860c99fccd74b63e530e3fd75d8fc8084dc4616f5cfce73ad71b21a7f280256f5b1b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}