{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x552a5e00af59c626bbd698d8c94eea8a6f043c2574b3b776818e7a7411cc713a",
    "signature": "0xc7f2e6cd452983e14177f23a00d4c2b3928e904738c623f25ea69cdf5275a3e226b85990f97eeef463a4d8ca3009fbc0cb965c9e56a77482709bdc90e7b0a9b31b",
    "signer": "0x030204c18e5923d8CAb041D245E7b85E4dAc2003",
    "userId": "626007525"
  }
}