{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0efbcdc928073e6caf80825de9bc7bfa16fcb243fe75a3a4e20e6647645daca8",
    "signature": "0xa1e6e1c25ab70ded2b4b878fc96136a235c154324c25c876744fec294efb711f7f488d9659b4727a03e79bd839293348f70caca5d83e699214e0d36b51cb68721b",
    "signer": "0x2E3d52B1402C716b32Bed03725756c3e8Be58636",
    "userId": "581962190"
  }
}