{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa492c5c5754548053b8dae3f26b872b9de13f95d98bf508d2cb0a70b94c5f748",
    "signature": "0x73d4b797e4e8c041682b2c2e3344fd0668bdc022b1f9d904c7bbc0fb3e66c6155b73f1c2d01a8cab405a2184b9ac8fad94844f3234b538699c4c20be2cd0a8861b",
    "signer": "0x18Bad5B6cA2128d4f8Ec8E28ffFe6Bd2Acc00033",
    "userId": "526106648"
  }
}