{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1883184",
    "entityType": "User",
    "nonce": "0x25daba7adc7e5acc9321522b36491aeb75b6a739a460a63d5cb84a2be0acc1b7",
    "signature": "0x14d404c873e8d5df6e8936d61e5b50d65524a6631ddbd37ca27eb5a197b0b7ab1d8bbe2ef6e37effb3a9ccd3d72b6ab382ade01da41da310829b5e261d5760d31c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}