{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "153754691",
    "entityType": "User",
    "nonce": "0xa9e0e7e46dc5e7dd4a5df1eac6b2feed6fe6d3d9a677006084d25ca6c9f5ccf2",
    "signature": "0x691608da219d814ca2a6947a4e798aa41c1e584a2d527e3ad300f3030c0fdfaf26e9d5aeaa2989e9b5b5ca1e7c907727ac468962ccb77608b11afdd147c766c11c",
    "signer": "0x6A29a28652c5866aB50f6690188bB7D36a01CB9d",
    "userId": "645940872"
  }
}