{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa53523c14c448cdbd35dab17c161496d1434fb3864c3a7e7af6514f8c4cea5be",
    "signature": "0x696ee8a01acc688a96e48cb513ac0f09bb6c80b1afd213d3d07e48e073a469b136a3953be14f6329aafe0f4d6521737b846e5eca5939b68aa3ede02a37d2b0b61b",
    "signer": "0xfE3962986f8B766F3A47Af7237a1dc627a839F94",
    "userId": "961349884"
  }
}