{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x25258904c4547d35103a251cc9ad51aa33e1534de71fff42c6257b6066dc93ba",
    "signature": "0xd1230c2d95c49ddb7a5fdc05af2c93369b5d27bbb0922ce32fe3df950faa481f5070f82aebd2334388105b0781e61cb809bcb0e8bae7fafaf6b0e5e92de0f9c71b",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}