{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x9588f89b579b691388055c09c5d94d97868b05f87c23caf0bea1e02bd21d760b",
    "signature": "0x362929e02d179315e3b2739f16baeeb2ad6171eb4b52e5747d386a7536c241b91c65ffc2937c3ca670f2db911c45d9985512134f755045158502d8bfee6f5e3d1c",
    "signer": "0x5e16eE72f4c7af2A50C7DA188d65e074e69D78B9",
    "userId": "898051107"
  }
}