{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8e0117b457f8b73e44b5cec74cc074cf8c12efe9fc1e41a0ae71f1692ff3470a",
    "signature": "0x7b6e3012fd8f7ee3b50033077415bfeda6baf9ef2389a8ccaca827f606a5f8ad2032cfa75f690566a6c9d392e9c6511c1336886d4d01ba90d7670f0de21d5cef1c",
    "signer": "0xf387e4Afe4d1d16CDC157Ff5C11F3D9C03E8c060",
    "userId": "974931447"
  }
}