{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x431afbfde473b0633a9c55790af2f67e7b8286bd33241c01e387b5ad3837a188",
    "signature": "0xb903ac2f3f5062c3006803d6e487d85d05e1cd1aa08a4ea0873c0c75094081d862c5621f0366e2bc29990f0d6eaad8580947bb8dfabcb8bd27fe0ec4ac2a974e1c",
    "signer": "0xC59f7055B078B1Ee57c271E19BE5Dd7033FD64f5",
    "userId": "950751701"
  }
}