{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1931557",
    "entityType": "User",
    "nonce": "0x9cafbe772e7863ea54d355aefd4546ac3e999bfc01777bf596eb71ab6392d212",
    "signature": "0x5e41b0c9cf81c9fb8b7ce51fbfed41afb414d9375e3d6ccb95e71449864666805ff4cf99287091f4e4b773dcd2cfadffdfcc6bc14de9e000e71e31e4abe096bd1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}