{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216351",
    "entityType": "User",
    "nonce": "0x97773c4bc17eb2f386242d4871d5834b4926492d77883fac06f17133d36fd2e8",
    "signature": "0x757c11c6b788e3373250a93057fca69c891611c8aaef7e6d375cbb491a31c40d2f2b09dc8f29a100dfd3d89bd57f83fe53d1e83449cf138becc8166db30b17801c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}