{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489783610",
    "entityType": "User",
    "nonce": "0xa70c1143ef2d068cdfb92beb5c1d242b82b1ea85127beecdd7441295a06ed583",
    "signature": "0x24b87af122db8685e448e23c20db6989c64af28ca294c2aef445c10bbdf96325111ce79d9cab61bcc9742c0f4fef47c4ca27e1eb553de92fbf60006befd8286c1b",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}