{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x989727fd7b49bbb3ee744b648c0e4330bac186dfad83cbb05aa413e6baffdf78",
    "signature": "0x1ca34ddbc8706a1c708ad558e834c59254fd25d00a71d882e70c0d97ccefa947541a6dec2f4a6365c4670dea5951cb7856547eab4ee6a32eeedad8621b9cbcda1c",
    "signer": "0xA9507d2878E25885A7375c257746F5fEeAcb09AB",
    "userId": "89625"
  }
}