{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7645875ec0f3a6a08603370fc58767ae3316389aa6d9b9ec79c46d32dbd9be5d",
    "signature": "0x78e3fb8a0cf26d09374e9e40824fac5f8d63032c5c62e09451af1c512e1a08491b8841bc6adc92906e5129b265e7c02de9d7fa84d373c119f1d1905bbb1af9361c",
    "signer": "0x6F2d3eB2e9C70B33fCbCFFfA0c23fF7bC7c23DE8",
    "userId": "758052743"
  }
}