{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0x8358901b55639933d3bd8f74f6b88972c37edf3090cdece281f00d8e69875a71",
    "signature": "0xdbc4888a04b2d50d290bccdcdbd1e89889234c6108ac0828f1a36e18dd6590f4204f9712752d09fc69f55b06a5e9abb96271f3bad8441ece54f231d897931d3e1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}