{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x56c0ebfd8809ef53384d3d9253f2da4653ecc639086fd5e88bbbdb75a8328db9",
    "signature": "0x7560b0e1101bc2c39528ed6ab395dc1c34136d9a5dcc61c9259c43015b5690082e0d82de04e921a4ea55f0c5838fa09d22a89821d4f1b5deb6caca85baaf494d1c",
    "signer": "0x5201AbCcf8367bf3036F8973F2a1ECA4125E674b",
    "userId": "4676532"
  }
}