{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a99f73f3788e1375b0941b33febaf6ee496cc8418d1b2565f68d8a54c3ba93b",
    "signature": "0xe74f08abec94045d08416c2c9b5c326026f3dc6f8c177ad20727333ab3fe917d2d84a0972cc3e87f8a94c8ae0a5161a7151131a3e2e1e37d856cd02f9f62c7191c",
    "signer": "0xbb8aEED2fc959D83A88CC32Ea637BfF46778037F",
    "userId": "107999417"
  }
}