{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839400815",
    "entityType": "User",
    "nonce": "0x3dd3793954d7b1835994e54879b5e9b877f5aa3fe2f5b479f6f054f7f2e7a423",
    "signature": "0x495ba6800c9b3cef1a8106ba61d5fd94c4f8e73072f89d34385d72208ccfc6e833c0fa78c52dd99eaba86b9ee30daeff7a1d3fd49c8dfec9a75ccc39b282d4971c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}