{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xe88909d6f9172365d09be00f7a8e44c5a133ce3d8bef64bf4b1a00a2a248cb7c",
    "signature": "0x482ce8fc0e47711993fb679e78d8a9653cd9ae7e617bb3534e30e33c805a476f5a41db7f1e5b61e2acfe2e98fd131fcf6e6be1aba7bc312e684267d0c6c43d9b1b",
    "signer": "0xAB601814a3b7DB1149bE0b45154295028AB51f97",
    "userId": "613793033"
  }
}