{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x18723425e50348c421ac1bbaff5f2534648dda674b2f1aec604155210fc84b49",
    "signature": "0xc00f8b11b3a3c3b9a5f6d5208d784333cba5152255c6e1a0fe22a276f15bbebd3a27231dfdccc64330baf98741c9601ee7751bb244968bf22f2c4ee96017f55c1b",
    "signer": "0xbb3b8C270080b0DAE42411345FCDc6a00369e247",
    "userId": "690093689"
  }
}