{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16b56a24cd734d9de08555b08c7e3985618daa0f5fa47f0eccee78f759c4a5fa",
    "signature": "0xcad4b1818646866908eba931a707633d9b8f2d58feb007418be5cab6067e950b206782b855ba39b8761df6920806bd7b50efff49bb5fec130bcf4fe26d8c8c2f1c",
    "signer": "0x631c61D8ec19b8B89957c2Fb0C4E408DB925EA80",
    "userId": "719708196"
  }
}