{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "769410778",
    "entityType": "User",
    "nonce": "0x237a5b9574b091b440ff708c7c941e149fe7762471b10e37733bc3945b2f7cb4",
    "signature": "0x75a4425befdcbbaa7a7999eb9fc53590cdc78625dc651ceeaee2c6ab657ecc687b5bb1bd4e26e67ef8d58fe8f339d48b706130884510cb2275d0b7d1a08962611c",
    "signer": "0xE726D55D6940a70995Ce9D8aa1aCE76FC6f4f544",
    "userId": "285113781"
  }
}