{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216964",
    "entityType": "User",
    "nonce": "0x453bd7f3bc30288b504fb4550cba1d2fb55f42ac01faea2acc2bf5b6b918095f",
    "signature": "0x1669a2c016ee0459708f10134fcb0685e6edbc0cb13a1363e36318fb8d3f601114de7a3d6ebef0b0907b5efb1a473c64c9ef63a33e148a30786113c3ccba756f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}