{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9fad9b0d3218e23a12ef0c30d5554237c4382c3972f9fd2aa269a351e5603e43",
    "signature": "0xdcee7def1c665fc279d7a7baa242c10d7707fcc6e326e60ff4e430dfd7ccd415579a6b1d2bf8b706725d0dd3c2f2d9b6ab1fc7422f1e98c1cafe5aec7a6d47201b",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}