{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdd83a184e1b11b23ca145727ca0dd808d25bee1025add9818f67b699a85bb59a",
    "signature": "0xf51c8a839452dbc95abe228d9be4cab1dcd4990bd9250b7dbb4073154e13b1d21a77c777530d7281050582967f776f06ac39f52fe857d26e5566969c3a77c6ec1b",
    "signer": "0x8bbbe80f72cd3e822cAeD16C5fcffC6dcFA8a103",
    "userId": "994740656"
  }
}