{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144203",
    "entityType": "User",
    "nonce": "0xdf46623f18e98d8e85944316781f15ea7250f4683c9879049cc1278156762626",
    "signature": "0xb7a4cdc215e9c138099fd0f0e19c7ef003c5632bec197bebc633531d0ab1e54d2abc1706ba23827d61ea1ecf99020c1c78cf0062a91b9c8e69ec60ac865802c61c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}