{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6f3477d29f837f2e82ff5cafca5054207ff8de9b68ed50c3f583547db6e629d2",
    "signature": "0xa3d4e5ee02befd3108e8e4e972708b9b0e542f97444d9087e08f1314d15d697d30ce61db725af5a47296e14bc89b91b76c89a5995c6c847d35197b838ae19e571b",
    "signer": "0x913521Bf406DC23cc81dd8919455344AB13eD81E",
    "userId": "892127665"
  }
}